document.write( "Question 488286: Need help please. \r
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document.write( "The area of a rectangular swimming pool is given by 3x^2+11x+6 ft^2. One side length of the pool is given by 3x + 2 feet. What is an algebraic expression for the other side length of the pool? Simplify this, and include correct units as part of your answer. \n" );
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Algebra.Com's Answer #333335 by Theo(13342)![]() ![]() You can put this solution on YOUR website! area of rectangular swimming pool is equal to 3x^2 + 11x + 6 square feet. \n" ); document.write( "one side of the pool is equal to 3x + 2 feet. \n" ); document.write( "the formula for the area of a rectangle is L * W = A \n" ); document.write( "L is the length \n" ); document.write( "W is the width. \n" ); document.write( "A is the area. \n" ); document.write( "you have A = 3x^2 + 11x + 6 \n" ); document.write( "you have L = 3x + 2 \n" ); document.write( "if A equals L * W, then: \n" ); document.write( "W = A / L \n" ); document.write( "this would be: \n" ); document.write( "(3x^2 + 11x + 6) / (3x + 2) \n" ); document.write( "we can do the division, or we can determine that this is a quadratic equation whose factors will be (3x + 2) * (x + something). \n" ); document.write( "since 6 is equal to 2 * 3, that something is probably 3. \n" ); document.write( "let's try the factors of (3x + 2) * (x + 3) \n" ); document.write( "we multiply those factors together to get: \n" ); document.write( "3x^2 + 9x + 2x + 6 \n" ); document.write( "combine like terms to get 3x^2 + 11x + 6 \n" ); document.write( "since this is the quadratic equation that represents the area of the pool, then we have found the width of the pool. \n" ); document.write( "A = L * W = (3x+2) * (x+3) \n" ); document.write( "L = 3x + 2 feet \n" ); document.write( "W = x + 3 feet \n" ); document.write( "we were given the length of the pool as 3x + 2 feet. \n" ); document.write( "the other side of the pool is the width of the pool which is equal to x + 3 feet \n" ); document.write( "if you multiply L * W you will get the area of the pool which is equal to 3x^2 + 11x + 6 square feet \n" ); document.write( " |